Knife



FIG. 1 is a left side elevational view of a knife showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an enlarged front elevational view thereof;

FIG. 6 is an enlarged rear elevational view thereof; and

FIG. 7 is an enlarged perspective view thereof. 

The ornamental design for a knife, as shown and described. 